Gmail uses webkit scrollbar styling, they don't reimplement scrollbars from scratch. If you go to gmail in Firefox it uses the stock scrollbars, which is really

Gmail uses webkit scrollbar styling, they don't reimplement scrollbars from scratch. If you go to gmail in Firefox it uses the stock scrollbars, which is really a major advantage to Firefox in my mind. It's kind of like when Chrome stopped supporting the <blink> tag even though webkit still supported it. Basically all of the times that I see this feature being used it is to make tiny, mostly transparent, or auto-hiding scrollbars that don't match the system UI at all and are a significant nuisance. I'm sure there are some sites that are styling them reasonably, but it doesn't seem to be the norm, even for the major players that have experienced design teams.